As used in this chapter, the following terms shall have the meanings indicated:
Includes all employees and elected officials of the Executive and Legislative branches of the County, including the employees and elected officials of the offices of independently elected County officials.
Envelopes, wrappers, labels, or cards used to transmit official mail.
Official mail, other than personal or political mail, which is authorized by law to be transmitted in the mail, either by the Department of Administrative Services, or an outside vendor under contract with the County or a County employee.